Can button



(No Model.) I

F. H. RICHARDS.

PUNCH.

No. 858,817. Patented Deo. '7, 1886.

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Inventor; I

UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, OF SPRINGFIELD, MASS., ASSIGNOR TO THE AMERI- CAN BUTTON FASTENER COMPANY, OF NEW BRITAIN, CONN.

PUNCH.

SPECIFICATION forming part of Letters Patent No. 353,817. dated December 7, 1886.

Application filed October 30, 1885. Serial No. 181,384. (No model.)

To all whom it may concern:

Be it known that I, FRANCIS H. RIcHARns, a citizen of the United States, residing at Springfield, in the county of Hampden, State of Massachusetts, have invented certain new and useful Improvements in Pliers, of which the following is a specification.

This invention relates to that class of pliers which, when provided with suitable dies or tools, are used for belt-punches and eyelet and button-fastener setting instruments.

The principal object of the invention is to furnish an implement of the aforesaid class in which the jaws shall have as they approach I5 each other a decreasing movement relative to the movement of the handles, thereby securing a greater power toward the end than at the beginning of their closing movement.

To this end the invention consists in the com- 2( bination hereinafter described and claimed.`

In the drawings accompanying and forming a part of this specification, Figure 1 is a side elevation of an implement embodying my invention, the jaws of the implement being in their open position. Fig. 2 is a similar view showing the relative positions of the parts when the jaws are partly closed. Fig. 3 is a similar view showing those positions when the jaws are closed. Fig. '4 is a top View of the implement. Fig. 5 is a cross sectional view in line a a, Fig. 3.

Similar characters designate like parts in all the figures.

My improved pliers comprise the member A, composedof a h'xed jaw, 2, and handle 6, together forming one side of the implement, the member B, which is a movable jaw having pin 7, and the member C, which is a lever Y having a pin, 5, and having a handle, 8, corresponding to handle 6. Members B and C are each pivoted on member A at 4 and 3, respectively. Connecting pins 5 and 7 there is a plain link, 9, which forms with part of member C a sort of inverted toggle-joint for operating member' B. Said link and pins are so arranged as to move part B more rapidly relative to the movement of handle 8 at the beginning than toward the end of its closing stroke. This action will be apparent upon comparing with each other the iirst three iigures of drawings. In Fig. l the handles and jaws are both widest open.' In Fig. 2 the handles have been brought towardeach other about onethird of their stroke, and this,

owing to the construction of the toggle, has about two-thirds closed the jaws. On now continuing the closing of the handles the jaws have a retarded motion, closing more slowly, but with correspondingly greater power, so that both thejaws and the handles 6o reach their closed position together, as in Fig.

3, wherein the three centers 3, 5, and 7 stand about in a straight line. On opening the handles, which may be done by a spring (not shown) in the ordina-ry way, the relative movements of the jaws and handles will of course be reversed.

It should be understood the instrument may be specially proportioned and arranged in various ways, to adapt it for the diiferent purposes for which it is to be used. In the present instance I have shown it as used for a beltpunch, l0 being the punch, and l2 the copper plate on which the punch acts.

It is not the sole object of my invention to 7 5 furnish pliers in which the jaws shall have the retarded closing movement above described.

It also aims to furnish a tool of the class specitied in which the jaws shall move through a given distance with less angular movement 8o than common to ordinary implements of the same size. rIhis object I`accomplish by pivoting together the members A and B farther back than usual toward the handles and providing means for operating them from a point forward (toward the left handin Fig. 1)of said pivot. That is to say: The handle C being pivoted to member A at 3, forward of pivot 4, the member B may be made much longer than it otherwise properly could be in d an instrument of a given size. This secures a minimum of angular movement of member B as compared with the vertical stroke of its front (left-hand) end.

Having thus described my invention, I Claim-- The improved plier or like instrument herein described, it comprising the member A, the member B, pivoted to member A at 4, rearward of pivot 3, the lever C, pivoted to member A at 3, forward of pivot 4, and a link connecting lever C with member B and operating as a toggle to impart a retarded movement to said member B, all substantially as described.

Vitnesses: FRANCIS l1. RICHARDS.

H. F.4L. ORcUTT, WILEUR M. STONE.

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